Industry Directory | Consultant / Service Provider / Distributor / Manufacturer / Other
Ludee Circuits offer RoHS PCB.We could offer leadfree HASL,Entek, flash gold, immersion gold, immersion silver, immersion tin finishing based on standard FR-4, CEM-3 materials, Teflon, Rogers RO4000 series, as well as high Tg S1170 materials.
Industry Directory | Manufacturer
Professional, Reliable,High Quality,Low Cost, Rapid Delivery PCB manufacturer
New Equipment | Education/Training
Failure Analysis Techniques for Electronics provides an overview of the characterization methods available at ACI Technologies, Inc. for determining the causes of failure in electronics devices. This publication will assist the reader in making inf
New Equipment | Education/Training
BEST training kits feature REAL circuit boards that represent actual soldering conditions. These training kits feature ".062 thick multilayer boards which are more representative of the thermal conditions of "real" circuit boards. This board feature
Electronics Forum | Thu Nov 09 23:27:53 EST 2000 | Craig
We are considering using gold plating on our fine pitch pcbs (as oppossed to HASL). We have heard of long term solder reliability problems with joint imbrittlment how bad is this and does it apply for all of the different plating processes the same?
Electronics Forum | Fri Nov 10 17:44:48 EST 2000 | Dave F
In response to your questions: Is the embrittlement from excess gold in lead / tin solder connections bad? It can be vereeee bad. Does it affect all plating processes the same? Give us a break and read the SMTnet Archives, for instance: BGA prob
Industry News | 2003-05-19 10:06:43.0
The PCB is available with a maximum panel size of 406-by-460mm and a minimum board thickness of 0.8mm.
Industry News | 2003-04-09 08:25:50.0
A new design guide is available from Genalog detailing Samtec's flex circuit capabilities.
Parts & Supplies | Circuit Board Assembly Products
1). 100mm x 98mm/1up, FR-4, 2). 1mm +/-0.1mm，6 Layers 3). 1oz copper finished 3). Green solder mask/white legend 4). Min. hole 0.15mm, 4/4 mil track/gap 5). Blind via layer 1-2, via-in-pad. 6). Immersion gold surface finish
Parts & Supplies | Circuit Board Assembly Products
1) 190*130mm/10up, FR-4, Tg 135, CTI 175-225V 2) Dielectric constant(Er): 4.4-5.2 3) 2 layers, 1.6mm thick, 1 oz 4) Min. hole size: 0.3mm 5) Min. track/space: 4/4 mils 6) LPI Solder mask/White legend 7) Fiducial mark, tooling strips, mounting holes
Technical Library | 2019-06-04 10:19:46.0
Interconnection technology relies very heavily on the ability of the conductors on a printed wiring assembly to maintain reliable signal integrity. Harsh environmental factors can precipitate a loss of conductivity due to oxidation and corrosion. Connections are typically soldered or inserted using pressure fitted connectors to obtain enough surface contact to meet the electrical conductivity requirements. In pressure contacts, surface integrity is especially critical where the abrasive effects of retraction and insertion can wear off the metallic finish from the contact area. This can expose the underlying copper or nickel and lead to increased resistance at the contact points. These types of conductors are frequently found in card edge connectors where the terminations are plated with a layer of nickel and gold (frequently referred to as gold fingers). A hard gold is typically used containing very small amounts of nickel and cobalt to increase the wear resistance.
Technical Library | 2019-06-07 14:49:54.0
ACI Technologies was contacted in regards to poor solder joint reliability. The customer submitted an assembly that was exhibiting intermittent opens at multiple locations on a ball grid array (BGA) component. The assembly’s functionality did not survive international shipping, essentially shock and vibration failures, immediately making the quality of the solder joints suspect. The customer was asked about the contract manufacturer and the reflow oven profile as well as the solder paste and surface finish used. The ACI engineering staff evaluated the contract manufacturer’s technique and determined that they were competent in the methods they used for placing thermocouples in the proper locations and developing the reflow oven profile. The surface finish was unusual, but not unheard of, in that it was hard gold over hard nickel, rather than electroless nickel immersion gold (ENIG). The customer was able to supply boundary scan testing data which showed a diagonal row of troublesome BGA pins.
ACI Technologies Inc. (ACI) is a scientific research corporation dedicated to the advancement of electronics manufacturing processes and materials for The Department of Defense and industry. This video provides an overview of our commercial service
Events Calendar | Wed Apr 20 00:00:00 EDT 2022 - Wed Apr 20 00:00:00 EDT 2022 | ,
Virtual Course: Selection Criteria of Surface Finish for Next Generation PCB Technologies
Career Center | Shen Zhen, China | Management,Sales/Marketing
Working in GLORYPCB for 10 years.knowing electronic supply chain very well. especially for PCB PCBA assembly and other Electronic Manufacturing Service.Glorypcb is a professional electronic manufacturer located in Shenzhen with three facilities.offe
Career Center | Alta Loma, California | Engineering,Quality Control,Research and Development
Rigid and Flexible Printed Circuits Plating and Metal Finishing Operations Six Sigma Work Instruction Documentation Process Development Equipment Selection and Specification New Facility Startup Air, Water and Hazardous Waste Environmental Reporting
Wire Bonding and Soldering on Enepig and Enep Surface Finishes with Pure Pd-Layers SMTnet Express October 11, 2012, Subscribers: 25550, Members: Companies: 9005, Users: 33789 Wire Bonding and Soldering on Enepig and Enep Surface Finishes with Pure
SMTnet Express, September 7, 2017, Subscribers: 30,782, Members: Companies: 10,712, Users: 23,761 Challenges on ENEPIG Finished PCBs: Gold Ball Bonding and Pad Metal Lift Young K. Song and Vanja Bukva; Teledyne DALSA As a surface finish for PCBs
| https://www.eptac.com/faqs/ask-helena-leo/ask/j-std-001e-2010-4-5-1-gold-removal-issues
: 4.5.1, Gold Removal Issues Question: Since we are seeing more and more components with gold finish on the solder attachment pads(specifically, leadless ICs mostly with bottom side terminations only for RF circuitry
| http://etasmt.com/cc?ID=te_news_bulletin,23575&url=_print
. During reflow, with the addition of tin-lead solders, the intermetallic grows. With other board metal finishes, other metallics form, such as AuSn when soldering components to boards with gold-flash finish (and tin-lead solder
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